FIX: Improve use of loading spinners on discovery routes
Instead of using a "discoveryLoading" action, return `true` so it can
bubble up itself.
UX: Fixes for group view
FEATURE: add a button for staff to delete a user on their profile page
just say Delete
I hated that period
FIX: Do not recall prior DRAFT in a given category when using the Create Topic keyboard shortcut
only auto scale email img if both dims large
Merge pull request #2968 from cpradio/pr-keyboard-create-topic-clean-composer

FIX: Do not recall prior DRAFT in a given category when using the Create...
FEATURE: Add category to Group Post Listing
improved email scale img
let's go with original iPhone dimensions
update rails master
FIX: Change is_staff to is_admin to match other places where guardian.allowed_category_ids is used
https://meta.discourse.org/t/security-permissions-and-messages-displayed-on-group-url/22169/17
Merge pull request #2971 from cpradio/pr-fix-allowed-category-ids-for-group-posts

FIX: Change is_staff to is_admin for group posts to match other places
PERF: use preloader trick to load topic categories
be explicit about log level
PERF: don't ever use inject on AR relations

inject will deteriorate to a method missing that
invokes arel and a world of uneeded work
fix minor typo
Omit Needless Words